The report, by scientists in the Netherlands and Germany, indicated that initial investments needed to be high to have any impact in slowing temperature rises. Beyond a certain threshold, however, extra spending would have clear returns on warming.

Until now, most governments have worried that costs may start low and then soar -- suggesting that ambitious targets will become too expensive for tackling threats such as extinctions, droughts, floods and rising seas.

When Florida sinks under the ocean the political will will be there but it will be to late. It will become easier through economies of scale, conservation(aka efficiency), education, and new technology.